Air and gas washing apparatus



June 24, 193 0. E. M. BASSLER 1,766,588

AIR AND GAS WASHING APPARATUS Filed Aug. 20, 1923 2 Sheets-Sheet 1 June24, 1930. E M; BASSLER 1,766,588

AIR AND GAS WASHING APPARATUS Filed Aug. 20, 1923 '2 Sheets-She et 2 23a 5 Q: '1 (D) 7/4 Z5 A: j H m .--@.W. U

E atented June 24, i930 ll E EDWIN M. BASSLER, F MILWAUKEE, WISCONSINAIR AND GAS WASHING APPARATUS Application filed August 20, 1923. SerialNo. 658,360.

The object of the invention is to provide.

an improved apparatus for the purpose specified, which will be effectivein operation and which may run continuously for an inm definite periodwithout becoming clogged and without impairment of its effectiveness. Tothis end, an apparatus embodying my invention and improvement comprisesthe various features, combinations of features and details ofconstruction hereinafter de scribed and claimed.

in the accompanying drawings, in which my invention is fullyillustrated,

Figure 1 is a side elevation, partly in sec- 29 tion, of an air and gaswashing apparatus embodying my invention and improvements.

Figure 2 is a top plan view thereof, partly in section; and

Figure 3 is an enlarged sectional side view of the spraying wheelforming part of the apparatus.

Referring now to the drawings, my improved air or gas washing apparatuscomprises a main housing made of sheet metal of suitable thickness toprovide adequate strength, or other suitable material, designated as awhole A; Said housing comprises a cylindrical side wall 1, the lower endof which rests upon suitable supporting piers 2, which may convenientlybe made of concrete. The upper end of said housing is closed by a sheetmetal top wall 3, which is provided with an admission opening 4 throughwhich the air or gas to be washed an enters the housing A. For reasonspresently apparent, the admission opening is 'made relatively large andis contracted to the size of the air or'gas supply pipe 5 by means of asheet metal reducing connection 6, made in the form of a truncated cone.

The lower end of the housing A is closed by means of a sheet metalbottom consisting, as shown, of an upper relatively small cylindricalportion 7, and a lower downwardly to flared portion or shirt 8, whichconnects the lower end of said cylindrical portion 7 with the lower endof the side wall 1.

The housing A is also provided with discharge openings for the treatedair or gas,

consisting, as shown, of relatively long slots 9 formed in oppositesides of the side walls of said housing A closely adjacent to the upperedge thereof. Said discharge openings communicate with a bustle pipe 10,adapted to connect said housing with a fan or blower of usual design,indicated at 11, which is driven from any suitable source of power, notshown, and which is adapted to create a current of air or gas to betreated through the apparatus.

Rotatably mounted within the housing A immediately below the admissionopening 4 thereto and in axial alignment therewith, is a spraying wheel,designated as a Whole B, consisting of a disk 12 formed at the center ofthe upper face of which is a conical projection 13 and secured in themargin of which are pins 14 which preferably form a circular seriesconcentric with the axis of rotation of said disk. The pins 14 arearranged close together, a desirable relation being to so arrange saidpins that the spaces between adjacent pins are substantially equal tothe diameter of the pins. For general purposes, said pins divergeoutwardly relatively to each other at angles varying from 30 to 45 tothe axis of rotation of said disk, but for use with material whichcontains no fibrous material, said pins may be arranged substantiallyparallel with the axis of rotation of said disk. For convenience indrilling the holes in which the pins 14 are secured, the surface of thedisk in which said pins are secured is rearwardly inclined, as shown at15, at an angle which may be the complement of the angle of divergenceof the pins 14: to the axis of the disk, with which relation said pinswill extend substantially at right angles to the surface 15.

A preferable form of spraying wheel for use in my improved air and gasWashing apparatus is that which forms the subjectmatter of U. S. LettersPatent, heretofore issued to applicant for spraying apparatus,

.No. 1,560,527, dated November 10, 1925,

to which reference is herein made for a description thereof in detail.

In the preferable construction shown, the spraying wheel B is of suchsize that it will extend outwardly beyond the edges of the admissionopening 4, and said spraying wheel is mounted at such a distance insideof the admission opening that a restricted opening 16 will be formedbetween the periphery of said spraying wheel and the top wall 3 of thehousing A substantially equal to the distance from the face of the disk12 to the outer ends of the pins 14 measured parallel with the axis ofrotation of said disk, so that the ends of said pins will extend intoclose proximity to the top wall 3 of said housing and all air or gasentering the housing A, when the apparatus is in operation, willtraverse said re stricted opening 16 and will pass outwardly between thepins 1 1.

Secured to and depending from the top wall 3 of the housing Asubstantially eoncentric with the spraying wheel B, is a circular baffle17 which encloses the spraying wheel B and the lower end of whichextends a considerable distance below said spraying wheel. Thus, inorder for air or gas entering the housing A through the admissionopening 1 to reach the discharge openings 9, in the side walls 2 of saidhousing and thus pass from said housing into the bustle pipe 10 andthence to the blower 11, it will be necessary for said gases to passdownwardly around the lower end of said cylindrical baille plate 17.

In the operation of the machine, a jet of water is adapted to bedischarged axially against the apex of the conical projection 13 on theface of the spraying wheel B from a nozzle 18 which communicates with apipe section 19 supported in the reducing connection 6 for the gassupply pipe 5, one end thereof being closed by means of a cap 20 and theopposite end thereof being connected by a pipe 21 with a source of watersupply, as shown, with a centrifugal pump 22 the suction side of whichis connected to a sump or settling tank 23 into which the water from thehousing A is adapted to drain through a discharge spout 2 1, thedischarge end of which is controlled by means of a balanced flap valve25.

The nozzle 18 is made large enough-say six (6) inches in diameter-toprovide an abundant water supply at relatively low pressure, and toinsure against clogging of said nozzle by the deposit of dirt orsediment therein, particularly dirt which contains fibrous material.

As clearly set forth in my said prior Patent No. 1,560,527, my inventioncontemplates dispensing with the conical projection 13,thus leaving theface of the disk 12 flat, and in discharging the jet of water from themoazle 18 directly against the flat face of the disk, the centrifugalaction of which will cause the water to spread radially over the face ofthe disk in the form of a thin sheet, which will be discharged betweenthe pins 1 1 and beaten into spray in the manner heretofore described.

In the preferable construction shown, the spraying wheel B is secured tothe upper end of an upright shaft 26 which is rotatably mounted inbearings formed in spiders 27 and 28 rigidly connected to the upper andlower ends, respectively, of channel bars 29 the lower ends of which arerigidly secured in a concrete foundation 30. The up-' per cylindricalportion 7 of the bottom of the housing A encloses the upper ends of thechannel bars 29 and is so proportioned that it fits said channel barsclosely, while the lower downwardly flared portion 8 thereof willprevent access of water to said channel bars and also to the lower shaftbearing in the spider 28.

Rotation is adapted to be imparted to the spraying wheel shaft 26 fromany suitable source of power, not shown, by means of a belt adjusted toa driving pulley 31 secured to said shaft adjacent to its lower end.

\Vith the described construction, it is obvious that a jetof waterdischarged from the nozzle 18 upon the apex of the conical projection 13on the face of the disk 12 will be deflected outwardly along the face ofthe disk in the form of a thin sheet, which will be discharged from saiddisk between the pins 1 1, while, as previously explained, the currentof air or gas to be treated, entering the housing A through theadmission opening 4, will also pass between said pins. Al-

so, the spraying wheel B is rotaoted at very I high speed, correspondingto a peripheral velocity of the disk 12 of from three to five thousandfeet per minute, and relatively very much faster than the velocity ofthe water and air or gas currents traversing the same.

Should it be found in practice that, due

to the large size and high peripheral velocity of the disk 12, the watersupplied to the spraying wheel attains such a high outward or radialvelocity when it passes between the pins, that it impairs the action ofthe spraying wheelthat is produces a spray which is coarser than desiredmy invention contemplates discharging only a part of the water upon thecenter of the wheel and in providing a second water supply pipe, troughor the like, adapted for supplying such further quantity of water as maybe desired to said spraying wheel, and at such a distance from itscenter, that it will have a desired velocity radially or outwardly whenit passes the pins 14. Ohviously, the inertia of the water supplied fromtime second source, will appreciably reduce the velocity of the watersupplied from the nozzle 18. In the drawings, 32 designates a pipesupported above the spray ing disk 12 at a distance from its centersubstantially equal to three quarters of the length of radius of saiddisk, said pipe being provided with discharge holes at its under sidethrough which water runs therefrom onto the face of said disk. Said pipeis adapted to be connected with a source of supply of water, not shown,by a pipe 33, which is preferably controlled by a suitable valve, notshown. Preferably also, the water supplied from the pipe 32 will beunder slight pressure only.

Thus, as the water discharged from the disk 12 and the air or gascurrents entering the housing A, traverse the space 16, they will besubjected to a violent beating action by the pins 1 which Will break thewater up into a fine spray, and will effect an intimate mechanicalmixture of said spray and said air or gas whereby the solid particlescontained in the air will become thoroughly wet and relatively heavy, sothat their inomentum, due to their high velocity, will project them,together with the water spray, against the sides of the battle plate17,.running down and draining off from said baflic plate with the waterwhich gathers thereon, into the annular space defined by the side walls2 of the housing A and the tlared tion S of the housing bottom, whenceit settling tank 23, in which a partial s tion of the solids iseffected, the said settling tank forming the so supply for the nozzle18, to which it is turned under desired pressure by the pump 22.

l i ater is supplied to the settling tank 23 from any availa le sourceby a pipe 34, which is controlled by ausual float valve, indicated 35,thus insuring an adequate supply of water at all times during operationof the apparatus.

1 claim:

1. ln a gas washing apparatus, the combination of a housing providedwith admission and discharge openings for the gas to be treated and thetreated gas, respectively, a spraying wheel rotatably mounted withinsaid housing comprising a disk, a multiplicity of pins secured in saiddisk adjacentto its periphery, said pins being spaced short distancesapart and arranged in a circular series concentric with the axis ofrotation of said spraying wheel, said spraying wheel tating saidspraying wheel at a high peripheral velocity, means for dischargingwater upon said spraying wheel, anda bafile which surrounds saidspraying wheel and against which the mixed water spray, the gasundergoing treatment and solid particles entrained therewith areprojected, thereby depositing the Water spray and entrained solidparticles upon the battle in the form of a fluid mi);- ture which drainstherefrom. into the lower end of the housing of the apparatus.

2. Gas washing apparatus as specified in claim 1, in which therestricted portion of the passageway traversed by the gas undergoingtreatment is formed in part by the body portion of the spraying wheel.

3. A gas washing apparatus as specified in claim 1, in which the diskportion of the spraying wheel comprises a central conical portion.

i. A. gas washing apparatus as specified in claim 1, in which the pinsof the spraying wheel are flared outwardly.

5. A gas washing apparatus as specified in claim 1, in which the pins ofthe spraying wheel are straight, smooth and unobstructed 6. A gaswashing apparatus as specified in claim l, in which the battle forms abarrier between the restricted opening traversed the gas to be treatedand across which the pins of the spraying wheel extend, adaptin claim 1,in which the baffle consists of a plate which surrounds the sprayingwheel extends below said spraying wheel and also below the gas dischargeopening from the housing of the apparatus.

A gas washin apparatus as specified in claim 1, in which the means fordischargwater upon the disk of the spraying wheel comprises a watersupply nozzle directed against the center thereof.

9. A gas washing apparatus as specified in claim It, in which the meansfor discharging water upon the disk of the spraying wheel comprises awater supply nozzle di rected against the center thereof, and a watersupply pipe supported above said disk at a distance from its center.

10. ln gas washing apparatus, the combination ota housing provided withgas admission and discharge openings, means tor producing a current ofgas from the admission to the discharge opening of said housin thepassageway traversed by the gas D7 I I n comprising a circularrestricted portion, a

rotatable spraying wheel comprising a multiplicity of pins which extendacross the re stricted portion of the passageway traversed. by the gas,means for rotating said spraying wheel, means for supplying liquid tosaid spraying wheel, and a cylindrical bafie plate which surrounds saidspraying wheel, Whereby said liquid will be converted into spray andintermixed with the gas and solid particles entrained therewith as ittraverses the restricted portion of the passageway traversed by the gas,and said mixed spray, gas and entrained solid particles projectedagainst the battle plate, thereby depositing the liquid spray andentrained solid particles upon the bafile plate in the form of a liuidmixture which drains therefrom into the housing below said battle plate.

In witness that I claim the foregoing as my invention, I aflix mysignature this 30th day of July, A. D. 1923.

EDVIN M. BASSLER.

